Sphecidae

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Sphecidae
Ammophila sabulosa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Suborder: Apocrita
Superfamily: Apoidea
Family: Sphecidae
Subfamilies

Ammophilinae
Chloriontinae
Sceliphrinae
Sphecinae

The Sphecidae (Latreille, 1802) are a cosmopolitan family of wasps that include digger wasps, mud daubers, and other familiar types that all fall under the category of thread-waisted wasps. Both of the traditional definitions of the Sphecidae (the conservative one, where all the sphecoid wasps other than ampulicids and heterogynaids were in a single large family, and the more refined one, where the seven large sphecid subfamilies were each elevated to family rank) have recently been shown to be paraphyletic, and the most recent classification is closer to the conservative scheme; the families Heterogynaidae and Ampulicidae are the sister taxa to what are now two families (instead of one), the Sphecidae and Crabronidae. Thus, the bulk of the sphecoid wasps are now placed in Crabronidae, and Sphecidae per se is a much more restricted concept, equivalent to what used to be the subfamily Sphecinae.

The biology of the Sphecidae, even under the restricted definition, is still fairly diverse; some sceliphrines even display rudimentary forms of sociality, and some sphecines rear multiple larvae in a single large brood cell. Many nest in pre-existing cavities, or dig simple burrows in the soil, but also some species construct free-standing nests of mud and even (in one genus) resin. All are predatory, but the type of prey ranges from spiders to various dictyopterans or orthopteroids to caterpillars (of either Lepidoptera or other Hymenoptera); the vast majority practice mass provisioning, providing all the prey items prior to laying the egg.

Subgroups

Subfamily Ammophilinae

  • Ammophila
  • Eremnophila
  • Eremochares
  • Hoplammophila
  • Parapsammophila
  • Podalonia

Subfamily Chloriontinae

Subfamily Sceliphrinae

Subfamily Sphecinae

  • Chilosphex
  • Isodontia
  • Palmodes
  • Prionyx
  • Sphex, known as "digger wasps"
Sphecid blocking its burrow with a stone
Sphecid carrying a caterpillar

References

Goulet, H., Huber, J.T. (1993) Hymenoptera of the World. Agriculture Canada Research Branch, publication 1894/E. 668pp.

External links

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